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1793c8f143
dlerror() is the correct way to test. (This used to be commit 41b1be15bac271116a7096e511cc029685013e1f)
93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
/*
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Unix SMB/CIFS implementation.
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module loading system
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Copyright (C) Jelmer Vernooij 2002
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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#ifdef HAVE_DLOPEN
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NTSTATUS smb_load_module(const char *module_name)
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{
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void *handle;
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init_module_function *init;
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NTSTATUS nt_status;
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const char *error;
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/* Always try to use LAZY symbol resolving; if the plugin has
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* backwards compatibility, there might be symbols in the
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* plugin referencing to old (removed) functions
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*/
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handle = sys_dlopen(module_name, RTLD_LAZY);
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if(!handle) {
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DEBUG(0, ("Error loading module '%s': %s\n", module_name, sys_dlerror()));
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return NT_STATUS_UNSUCCESSFUL;
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}
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init = sys_dlsym(handle, "init_module");
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/* we must check sys_dlerror() to determine if it worked, because
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sys_dlsym() can validly return NULL */
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error = sys_dlerror();
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if (error) {
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DEBUG(0, ("Error trying to resolve symbol 'init_module' in %s: %s\n", module_name, error));
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return NT_STATUS_UNSUCCESSFUL;
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}
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nt_status = init();
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DEBUG(2, ("Module '%s' loaded\n", module_name));
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return nt_status;
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}
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/* Load all modules in list and return number of
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* modules that has been successfully loaded */
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int smb_load_modules(const char **modules)
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{
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int i;
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int success = 0;
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for(i = 0; modules[i]; i++){
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if(NT_STATUS_IS_OK(smb_load_module(modules[i]))) {
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success++;
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}
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}
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DEBUG(2, ("%d modules successfully loaded\n", success));
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return success;
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}
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#else /* HAVE_DLOPEN */
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NTSTATUS smb_load_module(const char *module_name)
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{
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DEBUG(0,("This samba executable has not been build with plugin support"));
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return NT_STATUS_NOT_SUPPORTED;
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}
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int smb_load_modules(const char **modules)
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{
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DEBUG(0,("This samba executable has not been build with plugin support"));
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return -1;
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}
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#endif /* HAVE_DLOPEN */
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